Carbureter.



C. FELSKE.

CARBURBTER.

APPLICATION FILED 00T. 12, 1910y 1, 1 04,975 Patented July 28, 1914.

2 SHEETSHSHBET 1.

yez:

C. FELSKE.

CARBURETER.

APPLICATION HLM) 0011.12l 1910( 1,104,975. Panentea July 28, 1914.

2 SHEETSwSHEET 2.

and State 'of Ipdiana, liave'invented a new 3 gitsoleneor other fuel,adapting itseif autotionasfto make it 'easy to manufacture and andwcight,enables me to produce an arti# taken onthe line 1 of Fig. 9.-;Fig. 2 isa preferably cast of aluminum, although, 4of

er xoxoxo, muraria. ssrGNon 'ro PLANHABD MANUFACTURINGcomrmrruorfx'osorro, morena, AeoroRATIoNor INDIANA v .Specification ofLetters Eatent.

Patented' J illy 2,3, 1914-.

.. pplicatlcm.iledA Qctober 12,1910. Serial No. 586,610.

To all 'whom'ttmay concern: Y f

Be itjkncwn that I, CHAuLEs Finrskmn citizen of the United States ofAmerica., 'and a resident of Kokomo, county of Howard,

and useful Improvement in Curbureters, of whichthe following is aspecification.

My invention relate-.sto vaporizers and mixers for internal combustionengines and has for -its'principal objects the making of a. carbureterfor such engines which Will :nippl'y the proper mixture of Vgusnndair'at all enginespeeds, and'which will, st the Sametime, be economicalas to the. use of niatically to the various runningconditionsadjustments, and those of a most simple character, and .be 'of' `suchsimple construeto maintain.

enual area-s te atmospheric pressure" and eliminate thereby the use ofmore than' one size o drill in making the vaive openings, therebydecreasing the time` andA hence the frost Vof .-manufact\ 1re.-,` Thisimprovement f 'rombined with the use of balls of equal size cie whichvcombines cheapness with simplicity of construction. y

In the drawings which accompany and form, a. part of this specification:Figure 1 is a vertical sectional view of myv carbureter horizontalsectional viewof the sametaken on the line2`oi Fig'. l; Fig. 3 is avertical sectional view of the lowerportion of anV alternative form ofmy earbureter takeh' on the line 3-3 of Fig. .4:; Fig. 4- is ahorizontal sectional view'of the same taken `on the line 4 of Fig 3;Fig. 5 is a'horizontal se@ tional View of aportion of my'device takendirectly over one of the valves; Fig. 6 is a sectional `view of the sametaken on theline 6 or Fig. 5.`

Referring to Figs. l and 2, the parts 1, :2, 3 and 4 form the bodv .ofthe main framework of my carbureter. 'These parts are Course, they mayhemade in any other suitablel way or of'any 'other suitable material.

'Part l provided with an internal screw threaded opening 4C forfacilitating its at- Y A i at right angles vWith'the shaft .6. In' myinvention I employ valves exposing i tachiuent to theintake pipe voi theengine;

j g Writhin the neck or tube leading from` the ,intake pipeof .theengine there is'althrottle i'alve, which I preerablymake in the-generalform of a stovepipedamper. This damper plate is 'secured to the shaft 6With- 60 1 in the part 1, which. shaft carries ,at-'its outer v'extremity the lever 7 for theattachm'ent of the 'throttle valve rod bywhich the engine .is v4manually controlled by the' operator.

. Mounted, also, upon the shaft 6. there is a v 65 lever 8 whichturns'with the1shaft.,fThis lever o is L-l shaped audits outer endservesto engage the lug 9 proj ecting from the part .l inlsuch a manner as tolimit themovement o fthe shaftand'its-valve plate, to approxL 7o' u llmatelya 90.degrefe movement. By changn'ftheiengine; have a minimum ofmanual.`

ing the angular v positionof the operating The part. 2, 'together withthe part 3,

gforms the oatchamber of thecarbureter.-

Part 2-.engages vpart 1by the screw. threads,

-as clearly indicated'. 'The oat chamber 10 80 is annular in fox-mandwithin it is mounted the float 1 1 which may be oi cork, Wood,

hollow metal, or any other suitable substance of smaller speci-fic.gravity than vthe liquid. `fuel to .be used. This float is mounted 'by85 bolt 12, or bolts, onthelever 13 which is pivoted ori-the transverse'rod-'111 extendin across the` fuel intake chamberl. The fue intakechamber 15 isotset' from, butintegral with, the fioat chamber 10. On theV90- outer end lof the lever 113 there is carried a Aconev'alve 16 whichserves-toppen 'or close the passage 17 through which the liquid -fuel issupplied. Thevalve 1.6 is mounted on a, light vertical rod' of brassprovided with av 95 spherical enlargement'which engages loosely withthel seat-in the lever l3-and is held 'in place by a hollow nut"1' 9, asindicated. By

.this construction there is provided a iexible mounting for the valve161 allowing it to `100 seat itself' naturally when depressed A'c# cessto the valve is provided by means of the screw cap 20, which closes theupper part of the fuel intake-'chamber Gasolene-or other `fuel issuppliedv to. the .carbureter through 105 the passage 17, vsuitablepipes-terminati!! in the coupling 2l vleading to theffuel tan orreservoir. As soon as the gasolene within the fioat chamber reaches aredetermined level, the lioatll is raised,iwhieh depresses' 11G ,meansof a screw thread, as shown i the cone valve 16, thus closing off thesupply to open slowly, thus admitting more fuel.

In this way the level of the gasolene within the float chamber ismaintained at an approximately fixed position.

.The part 3 is provided with an' internal screw threaded flange 22, thescrew thread on which engages an external screw threaded portion of thepart l. As the float chamber of the part. 2 hes between the lateralflange 23 projet-.ting from the` p'art 1,- and the lateral flange 24projecting from the'part 3, the llof/ chamber j is securely clamped 'inplace betweenthese two flanges when 4the screv.' threaded portion 22 ofthe part 3 is screwed 'home on part 1.` I n order' to prevent a fuelleakage the gasket 25, preferably of tubular copper, filled withpacking, is

lprovided between the flange 24 .and the lower part ofthe iloat chamber.Carried uponl a tubular transverse member`26, of the partQ 3, is acup-shaped spray nozzle 27, which engages the transverse` tube-.26 bytherefore,' readily removable for c eansing purposes or for renewal.This spray nozzle .has an enlarged opening 28 at its upper end, ,whichopening communicates"through the .needle valve passage 29 with thepassage 30 of the transverse member 26. There is thus afforded a freepassage for` the fuel from the float chamber 10 to the cup 28 of thespray nozzle, and the -gasolene will, therefore, rise in the cup to thesame levelas in the float chamber. The passage 29v may closed to agreater or less extentl bythe needle valve 31, which isscrew threaded,as shown, and provided with a-stulling gland 32 which may bepackedtovprevent leakage of fuel. A suitable thumb screw 33 rovides readymeans for adjusting the nee' le valve within the passage, thusregulating the normal flow of fuel through the spray nozzle. Surroundingthe stem of. theJ needle valve 3l there. is an annularnpassage 34. whichforms the'normal air intake; air is thus taken in from the bottom of thecarbureter and led up thrbugh the passage 34 around the spray' nozzle27.4 Thel passage'34 is constrictedso as' to -form a strangling nozzle35which is on a level `with the upper edge of the spray nozzle. A By thismeans' the air, as it is drawn in through the' arbureter, rushes by' andis,

of brass or. bronze and is perforated `with A a series of holes 37, allof the same diameter.

These holes are countersunk to form seats for the balls 38, and themember 39 is lexternally screw threaded to engage the internal screwthread in the member 3, as shown. As is indicated,.member 39 may bescrewed into or out of the member 3, lthereby increasing or diminishingthe distance. between thetop ofthe balls and the lower surface ofthetransverse inward' projection of'part 3,.toadjust the lift of the ballsabove the valve seat.v I preferably make the balls o-f bronze'and makethem of the saine size and weight, the passages 37 being all of onediameter, the balls being lifted to increased heightsand admittingrelatively greater quantities of air as the suction increases with th'eenginespeed, thereby adjusting automatically thegsupply of air to .theengine speed at all times. 'lhe passage lthe fuel nozzle an is'constricted at a point,

just above the fuel nozzle so that air coming in through the auxiliarypassages will unite more completely with the vapor or spray emergingfrom the spray nozzle. The cup 28, which is just above the needle valve,afi'ordsa reservoir for a small amount of gasolene .during the periodsof idleness of the engine, and vthe lirst suction stroke of the enginein cranking throws the accumulated gas'olene out of this priming cupvand allows it to; mix freely with the incoming air, thus giving aninitial charge of suliicientrichness to ,cause the first explosion with'a certainty, the effect produced being practically the same as though'the engine were primedby an external means.

By the concentric form of the normal andv high suction air passages, therich mixture ofi' carbureted air through the normal air passagesretains, to a considerable extent, its

.cylindrical form and is surrounded by a concentric envelop of unmixedair from the high suction air passages as it passes upward through'the-opening 4. The advantage of thearrangement of parts securing thiscondition, is that the gasolene vapor does not condense upon the innersurface of the walls of the pipeleaving t-he carbureter, because thevapor itself isheld insulated in the center of the pipe and does nottouch the walls .until after it hasV proceeded so far as to find thewalls warmed by the engine, and there-A fore not producing condensation.

At .40 I show a` plunger which may be depressed by the lever. 41 so asto push the float l1 down andthereby Arais'e'the cone valve 16. By thisoperation gasolene is allowed to enter the float chamber above its usuallevel and thus flood the carburetor when such is desired.

The stem portion of the'part 3, inclosing i the needle valve 31, isthreaded on its frees- 1 `extremity to receive the thumb nut 43. The

part 4 is provided with a circular opening to inclose the passages 37and 34 and is held in place over these openings by the nut 43. Theadvantage of the circular form of part 3, Which permits of the pa rt flentirely in closing all of the air intake openings and passages Within'the cylindrical space of part 3, is that. the -air intake passage may becarried to a suit-able sour-ee of air for feeding the carbureter. Inainiiimobile Work the. carbureter is located lin rather dusty positionand the air intake 45': may be carried under the seat or higher in thecar it desired, to be above the dust of the road.

Referring now especially t-o.Figs. 3, it, 5 and ti, I have shown analternative form of valve for the admission of air at high enginespeeds. Instead of providing a meinber 39 in which a series of aperturesare carried2 I cast the part 3 in the form as shown 1n Figs. 3 and 4,and provide tapped openings for the admission ofthe tapped individualvalve seats 39. 'l'hese seats are made of brass and areprovided withopenings 37 of equal diameters. 'The balls 38 are all lof the same sizeand weight. It is obvious that with this method of manufacture I mayadapt with great facility a given -Carbureter to a `'given engine, forthe holes in the ball seats may be reduced to any desired degree or maybe completely closed, for, as is shown in Figs. 5 and t3, I may insertthe blind `seat 3U", thus closing coinpletelyv one or any number ofvalves` should aparticular earbureter bel found to supply` air toofreely at highengine speeds Ytor a particular engine. The ease withwhich this modification otmy carbureter may be adapted to all enginesforms a feature ot great convenience in manufacture and in practicaluse. f

It is obvious that. certain changes may be made in the details of myoarbureter ivitliout departing from the spirit of my in vention.

Irlaving thus described my invention, what I claim as; neu' and desireto set-nre by United Stairs letters Patent is as followst l. In acarbtu'eter, a normal air pi' geg a spray nozzle in said normal airpassage; an auxiliary air passage; an annular Vvalve seat membercontaining a plurality of valve openings in said auxiliary' air passage;ball valves normally closing` said openings; a member for limiting thelitt of said balls; means for adjusting the distance between said valveseat member' and said limiting n ember to vary the lift oit` said balls;means for locking said members together in their adjusted position, andan intake member common to all ofsaid valve openings held in place bysaid locking means.

In a carburetor, a spray nozzle; a passage surrounding' said spraynozzle .for the normal admission otl air; an auxiliary pas sagesurrounding said normal air passage t'or the admission of air at highengine suction; an annular valve scat member with a plurality ot' valvesfor i'i .-rinally closing said auxiliary pas` gie; a member tor limitingtheI lift of said valves; screw-threaded `means for adjusting thedistance between said valve seatinemliier and said limitingr member tovary the litt oit said valves; means for lorking" said members togetherin their ailjustiwl positii'in, and an intake mehr lier common to bothsaid passages held in 'place by said looking means.

Signed by me at lx'oltomo county of lfloiv- :1rd and State of indiana inthe presenee of tivo witnesses.

